前言许多年来,前寒武纪地质学家都在探讨利用古生物学方法进行区域和洲际地层对比的可能性。迭层石是非常丰富的前寒武纪化石,但是,在迭层石的成因模式还没有被人们认识以前,就作为指示化石是有疑问的(例如,克劳德,1942)。洛根等人(1964)在澳大利亚西部沙克湾(Shark Bay)发现一种很好的与前寒武纪柱状迭层石相似的现代类似物,但是,这与前寒武纪非常丰富的种类很多的复杂分叉迭层石形(form)是不能相比的。 Preface For many years, Precambrian geologists have been exploring the possibility of using palaeontology to compare regional and intercontinental stratigraphy. Gypsum is a very abundant Precambrian fossil, but it is doubtful as an indicator fossil that the fossil stone has been inferred before the genesis pattern of it was known (eg, Claude, 1942). Logan et al. (1964) found a good modern analogue similar to Precambrian columnar rocks in the Gulf of Shark Bay in western Australia, but this is consistent with the very abundant Precambrian species A lot of complicated bifurcated stone forms can not be compared.